As a person pushes a box across a floor, the energy from the person's moving arm is transferred to the box, and the box

and floor become warm. During this process, energy is

-increased

-conserved

-destroyed

-decreased

A microwave is rated at 750 watts. How long will it take the microwave to do 5700 J of work on a cup of water? Assume 100% efficiency. A) 0.13s B) 2s C) 7.6s D) 4,275,000 s

A (n) 6.2 kg object moving at 4.2 m/s eastward has a one-dimensional elastic collision with a (n) 6 kg object moving at 6.9 m/s in the opposite direction.

How does the overtone number relate to the standing wave pattern number

Which is the thick white substance that accumulates at the side of a cut in the process of healing?

You spot a friend on a bus while on your way to school. Why does your friend appear to be at rest even though the bus is moving?

A dc generator is the same as a (n) a. electric motor. b. ac generator. c. armature. d. electric current.

Which of the following best describes scientific knowledge A.) Durable B.) Absolute and never changing C.) Frequently varies

Beth made the chart shown. A 2-column table with 1 row. The first column labeled X has entries Wall clock, T V remote control, Portable music player. The second column labeled Y has entries Refrigerator, Table lamp, Hair dryer.

Which sentence states Newton's third law? If two objects collide, each object exerts a force in the same direction as the other. If two objects collide, each object exerts a force equal to and in the opposite direction of the other.

Why did the chicken cross the road.